Studies on Variability and Frequency Distribution of Yield and Yield Related Traits in F2 Population of Rice (Oryza sativa L.)

Genetic variability and frequency distribution studies in F2 population involving traditional variety mappillai samba

“…High PCV and GCV was observed in the number of filled grains per panicle indicates the high amount of variability. These results are in fullfilment with Seneega et al (2019), Priyanka et al (2019), Behara et al 2018, Sheshaiah et al (2018) and Badri et al (2016). High PCV and high GCV for a trait may be due to an additive gene action which provides an extent for selection.…”

“…Significant positively skewed and platykurtic distribution was noticed in grain L:B ratio. These results were in fulfilment with Sheshaiah et al (2018). Frequency distribution studies indicate a dominance based complementary epistasis gene action which was governed in the inheritance of these characters.…”

“…Sheshaiah et al (2018), Hefeina et al (2016) and Bharath et al (2018) for days to first flowering, Seneega et al (2019) for plant height, Divya et al (2018), Bharat et al (2018) and…”

Variability and Frequency Distribution Studies in F2 Segregating Population of Rice with Phosphorous Starvation Tolerance Gene (OsPSTOL 1) Introgressed

“…The mean, range, variability parameters and frequency distribution for various characters in two crosses are presented in Table 1 and 2. The results indicated that the estimates of phenotypic coefficient of variation (PCV) were higher than the genotypic coefficient of variation (GCV) for all the traits studied in both the crosses indicating the magnitude of environmental influence. Number of tillers per plant, number of productive tillers per plant, number of filled grains per panicle, shoot P content and single plant yield showed high PCV and GCV in both the crosses which were in accordance with Sheshaiah et al, (2018) for number of tillers per plant, number of productive tillers per plant and single plant yield; Nezam Ali et al, (2018) for number of filled grains per panicle and single plant yield and Abhilash et al, (2018) for number of productive tillers per plant and single plant yield. Low estimates of PCV and GCV were recorded by days to first flowering in both the crosses and plant height and panicle length in cross 2.…”

Genetic variability, frequency distribution and association analysis in ADT (R) 48 x Kavuni derived F2 population of rice (Oryza sativa L.)

“…Frequency distribution pattern of twelve quantitative traits based on skewness and kurtosis (Fig. 1) in segregants disclosed a significant positively skewed leptokurtic distribution for the number of tillers per plant, the number of productive tillers per plant and single plant yield in fulfilment with Sheshaiah et al (2018) of productive tillers per plant. Significant negatively skewed leptokurtic distribution was detected in traits, spikelet fertility and panicle length.…”